Abstract:
A method of generating X-rays includes providing a field-emission diode including two electrodes separated by a gap, a first conductor, a first insulator on a surface of the first conductor, a second insulator on a surface of the first insulator that is not in contact with the first conductor, and a second conductor. The first insulator and the second insulator have trapped electrons at an interface therebetween, and are provided between the first conductor and the second conductor. The method further includes moving the second conductor with respect to the first conductor to induce electrons on the second conductor via electrostatic induction; accelerating the induced electrons across the gap of the field-emission diode; and striking a target with accelerated electrons to produce an X-ray. The first insulator and the second insulator are not the same.
Abstract:
An antistatic film installed in an airtight vessel containing an electron source of an electron-generating device such as a picture display unit has a structure comprising a plurality of conductor particles with particle diameters of 0.5 to 10 nm dispersed in a medium containing a nitride; and thereby improves controllability for a resistivity value, stability and reproducibility, and the adequate temperature characteristics of resistance.
Abstract:
A color picture tube device that can adjust convergence without causing increases in cost and in power consumption is provided. One pair of magnetic flux generation means for generating a static quadrupole magnetic field are positioned above and below an area where a plurality of electron beams pass through. The static quadrupole magnetic field has an effect of adjusting convergence in a horizontal direction. In this construction, a magnetic flux generated by one of the two magnetic flux generation means that is closer to the plurality of electron beams is reduced, in sync with deflection of the plurality of electron beams in a vertical direction.
Abstract:
A high power switching apparatus comprises an annular cathode having a surface capable of emitting a hollow electron beam therefrom and an anode cavity spaced from said cathode. The cavity has an annular opening smaller in dimension than a corresponding internal dimension that defines the cavity to provide a Faraday cage collector of the hollow electron beam. A control electrode is disposed between the cathode and the anode cavity in a non-intercepting position relative to the hollow electron beam. The control electrode further comprises a first electrode element disposed outside of the hollow electron beam and a second electrode element disposed inside of the hollow electron beam. A controlling electric field region is provided between the first and second electrode elements for modulation of the hollow electron beam. Arc suppressing electrodes are also disposed between the control electrode and the anode. The arc suppressing electrodes are the same electric potential of the cathode. A voltage, positive with respect to the cathode, is applied to the control electrodes in order to draw the hollow electron beam from the emitting surface of the cathode and into the anode. The potential of the anode is generally positive with respect to the cathode, however, it need not be at a potential as high as that of the control electrodes especially when electrons are being drawn from the cathode.
Abstract:
An electron beam tube assembly has a pattern of conductors 20 at least partially provided by being deposited on a major surface of a face plate 16, of the tube 13, the conductors to extend from within the tube 13, at least to an edge 18 of the face plate spaced from the remainder of the tube, and at the edge providing a plurality of exposed, spaced apart ends 22, comprising electrodes, the opposite end of each conductor being coupled by resistive material 28 deposited on the tube to a conductive coating 26 also on the tube, the coating being maintained at a high positive potential with respect to the cathode, in response to the information signals, supplied to the electron beam deflection means 41 and/or to the electron beam modulation means 42, electrical discharges occur to mark an associated sheet 30 of material sensitive to electrical discharges each such electrical discharge being when the electron beam impinges on a conductor.